<SEC-DOCUMENT>0001209191-21-035976.txt : 20210526
<SEC-HEADER>0001209191-21-035976.hdr.sgml : 20210526
<ACCEPTANCE-DATETIME>20210526171133
ACCESSION NUMBER:		0001209191-21-035976
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210525
FILED AS OF DATE:		20210526
DATE AS OF CHANGE:		20210526

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Blanca Tere
		CENTRAL INDEX KEY:			0001586848

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35039
		FILM NUMBER:		21967346

	MAIL ADDRESS:	
		STREET 1:		C/O BANKUNITED, INC.
		STREET 2:		14817 OAK LANE
		CITY:			MIAMI LAKES
		STATE:			FL
		ZIP:			33016

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BankUnited, Inc.
		CENTRAL INDEX KEY:			0001504008
		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
		IRS NUMBER:				270162450
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		14817 OAK LANE
		CITY:			MIAMI LAKES
		STATE:			FL
		ZIP:			33016
		BUSINESS PHONE:		(305) 569-2000

	MAIL ADDRESS:	
		STREET 1:		14817 OAK LANE
		CITY:			MIAMI LAKES
		STATE:			FL
		ZIP:			33016
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-05-25</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001504008</issuerCik>
        <issuerName>BankUnited, Inc.</issuerName>
        <issuerTradingSymbol>BKU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001586848</rptOwnerCik>
            <rptOwnerName>Blanca Tere</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BANKUNITED, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>14817 OAK LANE</rptOwnerStreet2>
            <rptOwnerCity>MIAMI LAKES</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33016</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2021-05-25</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1514</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>14563</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Reflects 1,514 restricted shares issued pursuant to the terms of the BankUnited, Inc. 2014 Omnibus Equity Incentive Plan. The restricted shares have a grant date of May 25, 2021, and will vest in full on the earlier of the first anniversary of the date of grant or the date of the issuer's next annual meeting of stockholders, subject to the reporting person's continued service as a director through the vesting date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Susan Greenfield, as Attorney-in-Fact</signatureName>
        <signatureDate>2021-05-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
